Arie Adriaan "Aat" van Rhijn (23 October 1892 – 11 February 1986) was a Dutch politician of the defunct Christian Historical Union (CHU) party and later of the Labour Party (PvdA) and jurist. Van Rhijn worked as a researcher at the Utrecht University from April 1918 until July 1920 and as a civil servant for the Ministry of Water Management from June 1918 until July 1919. Van Rhijn worked as a trade association executive for the Publishing companies association (NUV) from July 1919 until January 1928 and also the Christian Employers' association (NCW) from April 1926 until January 1928. Van Rhijn worked as a civil servant for the Ministry of Labour, Commerce and Industry as Director-General of the department for Public Health from January 1928 until June 1933 and for the Ministry of Econom